Proc append

[Daily1]

i have 100000 observation in one dataset and another dataset have 200000 observation 

how to use proc append or other ways?

i want to joint this type of dataset 

[PaigeMiller]

PROC APPEND example

https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.4/proc/p1pyryfvsrne2kn1cv2diraku41o.htm

i want to joint this type of dataset 

There are many types of joins. Please explain further.